label

Each series point can be accompanied by a text label that represents data related to the point. These are called series point labels. Use the label object's properties to set label options for all chart series at once.

Specify the label object's properties within the commonSeriesSettings configuration object to set label options for all chart series at once.

If you have several series of a single type, you can set label options to the values specific to this series type using the corresponding object (area, line, etc.) within the commonSeriesSettings configuration object. The values that are set within series-type-specific configuration objects override the corresponding common values.

If you need to set a label option for an individual series, use the label object within the series object of the series array. The values that are set individually override the corresponding common values.

argumentFormat

Use this property to set a format for arguments when you are going to display them in point labels. For a listing of acceptable formats, refer to the format property. To learn how to set custom text for labels so that they include an argument value of the currently represented point, refer to the customizeText property.

For general information on data formatting, refer to the Data Formatting topic.

In this example, the point labels are formatted. The argumentFormat and argumentPrecision options are used to format the argument. The format and precision options are used to format the value. These formatted values are combined in the function assigned to the label's customizeText option.

argumentPrecision

Specifies a precision for formatted point arguments displayed in point labels.

This property's value must be an integer that indicates how many digits to show in the argument displayed in point labels. This property value is considered when labels display arguments in one of the following numeric formats: 'fixedPoint', 'exponential', 'currency', 'percent'. To learn how to set a format for arguments, refer to the argumentFormat property description. To learn how to set a custom text for point labels so that they include an argument value of the currently represented point, refer to the customizeText property description.

For general information on data formatting, refer to the Data Formatting topic.

In this example, the point labels are formatted. The argumentFormat and argumentPrecision options are used to format the argument. The format and precision options are used to format the value. These formatted values are combined in the function assigned to the label's customizeText option.

A series point label can be placed separately, near the represented point. To make the relationship between a label and its respective point clear, use a connector. Set the connector's visibility and appearance options using the connector object.

When implementing a callback function for this property, use the point value to be displayed in a label. In addition, you can use the argument of the currently displayed value. These values can be accessed using the following properties of the this object.

originalValue
Specifies the value of the currently represented point as it is set in the data source.

value
Specifies the value of the currently represented point. Differs from the originalValue when the axis' value type differs from the value type in the data source. In this instance, value has the type of the value axis.

valueText
Specifies the value of the currently represented point with applied formatting if the format and precision (optional) properties are specified.

originalArgument
Specifies the argument value of the currently represented point as it is set in the data source.

argument
Specifies the argument value of the currently represented point. Differs from the originalValue when the axis' argument type differs from the argument type in the data source. In this instance, argument has the type of the argument axis.

argumentText
Specifies the argument value of the currently represented point with applied formatting if the argumentFormat and argumentPrecision (optional) properties are specified.

point.tag
Specifies the tag of the currently represented point.

seriesName
Specifies the series of the currently represented point.

The function's parameter represents the same object as the this object. If appropriate, you can use the function's parameter to obtain the value that is currently represented by a label.

To get general information on data formatting, refer to the Data Formatting topic.

In this example, the point labels are formatted. The argumentFormat and argumentPrecision options are used to format the argument. The format and precision options are used to format the value. These formatted values are combined in the function assigned to the label's customizeText option.

In this example, the point labels are formatted. The argumentFormat and argumentPrecision options are used to format the argument. The format and precision options are used to format the value. These formatted values are combined in the function assigned to the label's customizeText option.

horizontalOffset

Specifies how to shift point labels horizontally from their initial positions.

precision

This property's value must be an integer indicating the number of digits to show in the value displayed in point labels. This property value is considered when labels display values in one of the following numeric formats: 'fixedPoint', 'exponential', 'currency' or 'percent'. To learn how to set a format for point values, refer to the format property description.

For general information on data formatting, refer to the Data Formatting topic.

In this example, the point labels are formatted. The argumentFormat and argumentPrecision options are used to format the argument. The format and precision options are used to format the value. These formatted values are combined in the function assigned to the label's customizeText option.

rotationAngle

Specifies the angle used to rotate point labels from their initial position.